Vertical support structure



FIG. 1 is a front perspective view of a vertical support structureaccording to our design;

FIG. 2 is another front perspective view thereof;

FIG. 3 is a rear perspective view thereof;

FIG. 4 is another rear perspective view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a left side elevational view thereof;

FIG. 10 is a right side elevational view thereof; and,

FIG. 11 is a front perspective view thereof in the context of a dumpbody.

The broken lines depict portions of the vertical support structure thatform no part of the claimed design. Additional broken lines in FIG. 11depict environmental subject matter that forms no part of the claimeddesign.

CLAIM The ornamental design for a vertical support structure, as shownand described.